APA (7e ed.) Bronvermelding

Ashaye, T. I. (2013). Soils, Civilisations and the March of Time. Obafemi Awolowo University Press.

Chicago (17e ed.) Bronvermelding

Ashaye, T. I. Soils, Civilisations and the March of Time. Obafemi Awolowo University Press, 2013.

MLA (9e ed.) Bronvermelding

Ashaye, T. I. Soils, Civilisations and the March of Time. Obafemi Awolowo University Press, 2013.

Let op: Deze citaties zijn niet altijd 100% accuraat.